Based on the bore section, combining with the study on lithology, well logging, seismic facies and sequence type, the structure of the sequence in the deeply down-faulted Dongying Sag is analyzed emphasizing on the low-stand fan depositional type, its controlling factors and depositional sequence.
Results suggest that the low-stand fans have a relationship with the fault break-slope. The type, scale and location of the fault break-slope controls the low-stand fan distribution, which results in the forming of the typical abrupt slope-type and gentle slope-type low-stand fan depositional sequence.
In recent years,based on the theory of “the exploration of the lithological lower-stand fan deposit group along the fault slope break”,1640 million barrels of geological crude oil reserves have been proved in the faulted lacustrine of the Jiyang Basin,and 20 million barrels of oil production have been achieved.
1. "Four histories" include basin filling, tectonic evolution, organic matter mature and diagenesis histories. It is the basement of the evaluation for the hydrocarbon exploration targets, and it is important to analysis the specific basin.
We have classified these crinoid species into four groups based on the stalk length and fan density, e.g., long stalk with low fan density, long stalk with high fan density, short stalk with low fan density, and short stalk with high fan density.
A good rule is high flame, high fan and low flame, low fan.
Desiccant systems for these broad market applications must have low first cost, low fan requirements, and good energy efficiency.
To minimize noise problems, the ductwork for these units should be designed so that proper airflow can be accomplished with low fan speeds.
The AU arranges these components in a streamlined, pipelined configuration that exhibits low fan out.